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Fixed Points for Mean Non-expansive Mappings

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Acta Mathematicae Applicatae Sinica 2007年第3期23卷 489-494页

作者： Chun-xue wu li-juan Zhang Department of Mathematics Yantai University Yantai 264005 China

For a Banach Space X Garcia-Falset introduced the coefficient R（X） and showed that if R（X）〈 2 then X has a fixed point. In this paper, we define a mean non-expansive mapping T on X in the sense that ｜｜Tx - TY｜｜ ≤ a｜｜x - y｜｜＋ b｜｜x - Ty｜｜ for any x,y E X, where a,b ≥ 0, a ＋ b ≤ 1. We show that if R（X）〈 1/1＋b then T has a fixed point in X.

关键词： Fixed point property mean non-expansive mapping normal structure

A Study of Surfactant-Induced Growth of Ag on Ag (111)

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Communications in Theoretical Physics 2008年第12期50卷 1439-1442页

作者： wu li-li HU juan-Mei wu Feng-Min College of Mathematics and Physics Information Engineering Zhejiang Normal University Jinhua 321004 China

A new growth model is introduced to describe surfactant-induced growth of Ag on Ag （111） with realistic physical parameters. In this model, the A-S exchange mechanism is considered for the first time. Using the Monte Carlo simulations, the influence of exchange mechanism, surface temperature T, the exchange barrier Eεx, and the coverage of surfactant θM on the growth mode and morphology during multilayer film growth of Ag/Ag （111） are studied in detail Both the referenced value of surfactant coverage and the method to obtain perfect layer-by-layer film in surfactantinduced Ag/Ag （111） system are provided. Our simulation results are consistent with many experimental observations for surfactant-induced growth of Ag on Ag （111）.

关键词： surfactant surface roughness exchange Monte Carlo simulation

Novel high-voltage self-adaptive power device based on interface charge＊

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Chinese Physics B 2011年第2期20卷 408-415页

作者： wu li-juan Hu Sheng-Dong Zhang Bo li Zhao-Ji State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu 610054 China College of Communication Engineering Chengdu University of Information Technology Chengdu 610225 China College of Communication Engineering Chongqing University Chongqing 400044 China

This paper presents a novel high-voltage lateral double diffused metal-oxide semiconductor （LDMOS） with self- adaptive interface charge （SAC） layer and its physical model of the vertical interface electric field. The SAC can be self-adaptive to collect high concentration dynamic inversion holes, which effectively enhance the electric field of dielectric buried layer （EI） and increase breakdown voltage （BV）. The BV and EI of SAC LDMOS increase to 612 V and 600 V/tim from 204 V and 90.7 V/ttm of the conventional silicon-on-insulator, respectively. Moreover, enhancement factors of r/which present the enhanced ability of interface charge on EI are defined and analysed.

关键词： self-adaptive interface charge inversion holes dielectric layer electric field breakdown voltage

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城市轨道交通车站分级联动运营组织方案研究

智能城市 2024年第2期10卷 17-20页

作者：吴丽娟朱小军天津三号线轨道交通运营有限公司天津300391 天津市政工程设计研究总院有限公司天津300391

文章基于车站时空分布特征对车站分类,提出车站分级联动运营组织方案。各区域面积分别量化进站、售票机、候车区乘客容纳数量;设置车站控制区域,分为安检区、售票服务区、候车区;提出Ⅰ、Ⅱ、Ⅲ级客运组织分类标准及辅助判断方法,提出... 详细信息

文章基于车站时空分布特征对车站分类,提出车站分级联动运营组织方案。各区域面积分别量化进站、售票机、候车区乘客容纳数量;设置车站控制区域,分为安检区、售票服务区、候车区;提出Ⅰ、Ⅱ、Ⅲ级客运组织分类标准及辅助判断方法,提出分级限流措施和控制措施。在实际运用过程中,以上述研究方法制定车站分级联动客运组织方案,车站可快速进行人员和措施安排,灵活应对突发大客流,实现城市轨道交通车站的安全有序运营。

关键词：城市轨道交通车站管理运营组织分级管理联动管理突发大客流

A New Approach to Urban Rainwater Management

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Journal of China University of Mining and Technology 2007年第1期17卷 82-84页

作者： ZENG Bing TAN Hai-qiao wu li-juan School of Resource and Earth Sciences China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China

Based on an analysis of our research results and the main problems relating to urban rainwater treatment, we propose a new approach to urban rainwater management in China. The necessity and feasibility of such a new approach are discussed. From an ecological point of view all components of the global system, including residents living in cities, have the same right to enjoy rainwater. Therefore, urban rainwater should neither be simply drained as waste water, nor be completely harvested as a kind of resource. The objective of this new approach is to maintain the natural hydrological cycle in urban areas during urbanization. When necessary, it could also be used to regulate the amount of runoff, evaporation and infiltration in a city in order to rehabilitate the hydrological cycle given the local conditions. Three basic principles should be adopted in rainwater management, i.e., separation of rainfall from sewage, limited utilization and small and decentralized facilities. Four methods can be used for urban rainwater management: rainwater harvest, rainwater infiltration, rainwater storage and rainwater pipes. The natural hydrological cycle in urban areas could be rehabilitated through rainwater management, which is of great importance for sustainable development of our cities.

关键词： urban rainwater management hydrological cycle rehabilitation

A Novel Silicon-on-Insulator Super-Junction Lateral-Double-Diffused Metal-Oxide-Semiconductor Transistor with T-Dual Dielectric Buried Layers

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Chinese Physics Letters 2013年第12期30卷 112-115页

作者： wu li-juan ZHANG Wen-Tong ZHANG Bo li Zhao-Ji College of Communication Engineering Chengdu University of Information TechnologyChengdu 610225 State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of ChinaChengdu 610054

A novel silicon-on-insulator(SOI)high-voltage device of super-junction(SJ)lateral-double-diffused metal-oxide-semiconductor transistors(LDMOSTs)with T-dual dielectric buried layers(T-DBLs)is *** T-DBLs are formed by the first T-shaped dielectric layer and the second dielectric layer.A lot of holes are accumulated on the top interface of the second dielectric layer,which compensates for the charge imbalance of the surface N and P pillars,thus the substrate-assisted depletion(SAD)effect is eliminated in the new *** electric field of the second dielectric buried layer,EI2,is enhanced by the interface charges,and the breakdown voltage Vbreakdown is ***2=515 V/μm is obtained in the T-DBL SOI *** Vbreakdown of the new device is increased from 124 V of the conventional SOI SJ to 302 V with a 15μm length drift *** specific on-resistance(Ron,sp)of the T-DBL SOI SJ is only 0.00865Ω?cm2 and the FOM(FOM=V2breakdown/Ron,sp)is 10.54 MW/cm2.

关键词： breakdown SOI dielectric

The Epidemiology, Diagnosis and Prognosis of Long-COVID

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Biomedical and Environmental Sciences 2022年第12期35卷 1133-1139页

作者： DU Ying ZHANG Jie wu li juan ZHANG Qun WANG You Xin Beijing Key Laboratory of Clinical Epidemiology School of Public HealthCapital Medical UniversityBeijing 100069China Chinese Center for Disease Control and Prevention Beijing 102206China Centre for Precision Medicine Edith Cowan UniversityPerth WA6027Australia

INTRODUCTION As of October 26, 2022, more than 625 million confirmed cases of COVID-19 and more than 6.56 million deaths have been reported to the World Health Organization(WHO), and the natural history,clinical course, and long-term consequences of this new disease are still not completely *** more than two years of fighting against the SARS-CoV-2 pandemic, the number of patients with long-term persistent COVID-19 symptoms after acute infection is noteworthy.

关键词： Epidemiology acute clinical

Multifunctional carbon materials from rugose rose for energy storage and water purification

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Frontiers of Chemical Science and Engineering 2024年第9期18卷 1-13页

作者： Peng-Hui li Hui Zhou Wen-juan wu Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources Nanjing Forestry UniversityNanjing 210037China College of light Industry and Food Engineering Nanjing Forestry UniversityNanjing 210037China College of Chemical Engineering East China University of Science and TechnologyShanghai 200237China State Key Laboratory of Chemical Engineering Shanghai 200237China

With the advancement of social process,the resource problem is becoming more prominent,biomass materials come into being,and it is becoming more and more important to explore and prepare efficient and multifunctional biomass materials to alleviate the problems of energy storage and water *** this paper,nitrogen-doped hierarchical porous carbon materials(NRRC)were produced by one-step carbonization of withered rose as raw material and melamine as nitrogen source with KOH-activated *** resulting nitrogen-doped porous carbon material had the most abundant pores and the best microspherical graded pore structure,with a specific surface area of up to 1393 m2·g^(-1),a pore volume of 0.68 cm3·g^(-1),and a nitrogen-doped content of 5.52%.Electrochemical tests showed that the maximum specific capacitance of NRRC in the three-electrode system was 346.4 F·g^(-1)(0.5 A·g^(-1)),which was combined with favorable capacitance retention performance and cycling *** NRRC//NRRC symmetric supercapacitors were further assembled,and the maximum energy density of a single device was 23.88 Wh·kg^(-1),which still maintains excellent capacitance retention and cyclic charging/discharging *** example,the capacitance retention rate was always close to 96.27%with almost negligible capacitance loss after 10000 consecutive charge/discharge cycles(current density:10 A·g^(-1)).Regardless of the three-electrode or two-electrode system,the super capacitive performance of NRRC porous carbon materials was comparable to the electrochemical performance of many reported biomass porous carbon materials,which showed better energy storage advantages and practical application *** addition,NRRC porous carbon materials had excellent water purification *** dye adsorption test confirmed that NRRC had a high adsorption capacity(491.47 mg·g^(-1))for methylene *** undoubtedly also showed a potential and promising avenue for high value-added utilization

关键词： rose carbon adsorption electrode material electrochemical performance

肝硬化并发自发性细菌性腹膜炎的危险因素及其与TRAF6基因多态性的关联

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中华医院感染学杂志 2024年第5期34卷 698-702页

作者：杨三霞戚昉吴丽娟龚文兰杨佳慧熊志斌沈越利桐乡市第一人民医院感染科浙江桐乡314500

目的分析肝硬化并发自发性细菌性腹膜炎(SBP)的危险因素及其与肿瘤坏死因子受体相关因子6(TRAF6)基因多态性的关联。方法纳入2018年6月-2022年1月桐乡市第一人民医院收治的肝硬化患者153例进行研究,根据其并发SBP情况,分为SBP组52例、... 详细信息

目的分析肝硬化并发自发性细菌性腹膜炎(SBP)的危险因素及其与肿瘤坏死因子受体相关因子6(TRAF6)基因多态性的关联。方法纳入2018年6月-2022年1月桐乡市第一人民医院收治的肝硬化患者153例进行研究,根据其并发SBP情况,分为SBP组52例、非SBP组101例。分析两组TRAF6基因多态性,通过单因素分析及多因素Logistic回归分析法分析肝硬化并发SBP的危险因素。结果肝硬化患者153例,并发SBP52例,占比为33.99%,SBP组TRAF6基因rs5030445位点AA型占比高于非SBP组(P60岁、Child-Pugh分级C级、合并上消化道出血、合并肝性脑病、合并肝肾综合征,血清总胆红素(TBil)水平升高,腹水白蛋白(Alb)水平降低(P60岁、Child-Pugh分级C级、合并肝性脑病、TRAF6基因rs5030445位点AA型为肝硬化并发SBP的危险因素(P<0.05);腹水Alb水平升高为肝硬化并发SBP的保护因素(P <0.05)。结论肝硬化并发SBP的发生率为33.99%,其发生与TRAF6基因多态性密切相关,肝硬化并发SBP的危险因素较多,可为预防措施的制定提供依据。

关键词：肝硬化自发性细菌性腹膜炎肿瘤坏死因子受体相关因子6 基因多态性危险因素关联